REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday 2 February 2019

SONY HCD EX66 – SMPS AND MAIN AMPLIFIER CIRCUIT DIAGRAM

Sony HCD EX66 – SMPS and main amplifier circuit diagram

Used ICs - STR-Y6766, MM1431CURE (Opto-Coupler), SI-3010KM-TLS, SI-3010KFEK, SI-8008TM-TLS, PST3629NR, NJM4558V-TE2
Mexican model: AC 127 V, 60 Hz
Argentine model: AC 220 V ‒ 240 V, 50/60 Hz
Other models: AC 120 V ‒ 240 V, 50/60 Hz
HCD-EX99: 85 W:  (0.5 W at the Power Saving Mode)
HCD-EX88: 70 W:  (0.5 W at the Power Saving Mode)
HCD-EX66: 45 W:  (0.5 W at the Power Saving Mode)
Mechanism type: CDM76B-D1BD76
Optical pickup block names: DS11MMVGP
HOW TO RELEASE THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.
1. Press [Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. While pressing the [Stop] button for more 5 seconds.
4. The message “CHILD LOCK OFF” is displayed and the disc tray is unlocked.
Note: When “CHILD LOCK ON” is displayed, the slot lock is not released by turning power on/off with the [Power] button.
When installing a new OP unit, be sure to connect the flexible
printed circuit board first of all before removing the static electricity prevention solder bridge by unsoldering.
Remove the static electricity prevention solder bridge by unsoldering after the flexible printed circuit board has already been connected.
(Do not remove nor unsolder the solder bridge as long as the OP unit is kept standalone.)
COLD RESET
The cold reset clears all data including preset data stored in the memory to initial conditions. Execute this mode when returning the set to the customer.
Procedure:
1. In the standby status, press the [Power] button to turn the power on.
2. Press three buttons of [Stop], [FUNCTION] and [Power] simultaneously.
3. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the [Power] button to turn the power on.
2. Press three buttons of [Stop], [OPTIONS] and [power] simultaneously.
3. When the panel test mode is activated, all LEDs and segments of the liquid crystal display panel are all turned on.
Version Check
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid crystal display panel are turned on), press the [FUNCTION] button.
2. On the liquid crystal display panel, date and version are displayed “xxxxVxxx”.
3. From this status, press the [>||] button, and the destination and model name are displayed.
4. To release from this mode, press three buttons of [ Stop], [OPTIONS] and [Power] simultaneously.
Key Test Mode
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid crystal display panel are turned on), press the [stop] button.
2. The message “KEY0 0 0” displayed. Whenever any buttons are pressed and the [VOLUME] control is turned, the value is changed.
3. To release from this mode, press three buttons of [Stop], [OPTIONS] and [Power] simultaneously.
CHANGE-OVER THE AM TUNING INTERVAL
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select TUNER AM function.
3. Press the [Power] button again to turn the power off (clock mode).
4. After pressing the [DISPLAY] button on the remote commander, while pressing the [TUNING + >>  >>||] button, press the [Power] button.
5. It turns power on and display “9k STEP” or “10k STEP”, and thus the tuning interval is changed over.
CD SHIP MODE
This mode can run the CD sled motor optionally. Use this mode, for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [Power] button to turn the power on.
2. Confirm there is no disc in tray.
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [Stop] and [Power] simultaneously.
5. Set to the CD ship mode (chucking on).
6. After blink “STANDBY”, “CHILD LOCK ON” is displayed, disconnect the AC plug.
CD SHIP AND COLD RESET
Procedure:
1. Press the [Power] button to turn the power on.
2. Confirm there is no disc in tray.
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [ENTER], [TUNING– ||<<  <<] and [Power] simultaneously.
5. After blink “STANDBY”, “RESET” is displayed, disconnect the AC plug.
SMPS PWB
SMPS  circuit diagram
The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
CD POWER MANAGE
This mode is for switch the CD power supply on/off. Even if this state pulls out AC plug, it is held.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press the [Power] button again to turn the power off (clock mode).
4. After pressing the [DISPLAY] button on the remote commander, while pressing the [Stop] button, press the [Power] button.
5. It turns power on and display “CD/USB”, then display “PWR ON” or “PWR OFF”.
HCD-EX66 is the amplifier, USB, CD player and tuner section in MHC-EX66.
HCD-EX88 is the amplifier, USB, CD player and tuner section in MHC-EX88.
HCD-EX99 is the amplifier, USB, CD player and tuner section in MHC-EX99
Posted By: FRANK at 05:58
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